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https://issues.apache.org/jira/browse/HDFS-8499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14632145#comment-14632145
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Tsz Wo Nicholas Sze commented on HDFS-8499:
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Even for intermediate state, we should choose the best option since the
intermediate state may last long and possibly becomes the final state.
> ... option A primarily to minimize change and keep trunk more stable ...
This may not be true. Multiple people told me the design #1 (or the trunk code
after HDFS-8499) is harder to understand. Design #2 actually is more closer to
the trunk code before HDFS-8499.
Ignoring minimizing trunk change for the moment, do you agree that Design #2 is
better since it uses the strongest is-a relationship for extending?
> Refactor BlockInfo class hierarchy with static helper class
> -----------------------------------------------------------
>
> Key: HDFS-8499
> URL: https://issues.apache.org/jira/browse/HDFS-8499
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: 2.7.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Fix For: 2.8.0
>
> Attachments: HDFS-8499.00.patch, HDFS-8499.01.patch,
> HDFS-8499.02.patch, HDFS-8499.03.patch, HDFS-8499.04.patch,
> HDFS-8499.05.patch, HDFS-8499.06.patch, HDFS-8499.07.patch,
> HDFS-8499.UCFeature.patch, HDFS-bistriped.patch
>
>
> In HDFS-7285 branch, the {{BlockInfoUnderConstruction}} interface provides a
> common abstraction for striped and contiguous UC blocks. This JIRA aims to
> merge it to trunk.
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